ahh yeah, it's so hit or miss, and it really depends on the local climate and the particular forest - don't quote me on this, but i think i read that nitrogen content in the soil in the region correlates with the degree of bacterial vs fungal decay you get. i went out a few times in the bush near where i grew up in southern ontario and there was hardly anything, but then at my old summer camp a bit further northeast it was like a fairy kingdom in september. we found a few semi-edible types like pepper milkcaps, as well as a small cluster of chanterelles and a rare, bizarre kind whose name escapes me that was incredibly sweet

i'll have to try that trick next foraging season!